<template>
  <div class="login">
    <t-form
      ref="loginRef"
      :data="loginForm"
      :rules="loginRules"
      labelWidth="0"
      class="login-form"
    >
      <h3 class="title">若依后台管理系统</h3>
      <t-form-item name="username">
        <t-input
          v-model="loginForm.username"
          size="large"
          auto-complete="off"
          placeholder="账号"
          @enter="handleLogin"
        >
          <template #prefix-icon>
            <t-icon name="user" />
          </template>
        </t-input>
      </t-form-item>
      <t-form-item name="password">
        <t-input
          v-model="loginForm.password"
          size="large"
          :type="showPsw ? 'text' : 'password'"
          auto-complete="off"
          placeholder="密码"
          @enter="handleLogin"
        >
          <template #prefix-icon>
            <t-icon name="lock-on" />
          </template>
          <template #suffix-icon>
            <t-icon
              :name="showPsw ? 'browse' : 'browse-off'"
              @click="showPsw = !showPsw"
            />
          </template>
        </t-input>
      </t-form-item>
      <t-form-item name="code" v-if="captchaEnabled">
        <t-input
          v-model="loginForm.code"
          size="large"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @enter="handleLogin"
        >
          <template #prefix-icon>
            <t-icon name="code" />
          </template>
        </t-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" />
        </div>
      </t-form-item>
      <t-checkbox
        v-model="loginForm.rememberMe"
        style="margin: 0px 0px 25px 0px"
      >
        记住密码
      </t-checkbox>
      <t-form-item style="width: 100%">
        <t-button
          :loading="loading"
          size="large"
          style="width: 100%"
          theme="primary"
          @click="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </t-button>
        <div style="float: right" v-if="register">
          <router-link class="link-type" :to="'/register'">
            立即注册
          </router-link>
        </div>
      </t-form-item>
    </t-form>
    <!--  底部  -->
    <div class="t-login-footer">
      <span>Copyright © 2018-2023 ruoyi.vip All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from "@/store/modules/user";

const userStore = useUserStore();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "admin",
  password: "admin123",
  rememberMe: false,
  code: "",
  uuid: "",
});
const loginRef = ref(null);

const loginRules = {
  username: [{ required: true, message: "请输入您的账号" }],
  password: [{ required: true, message: "请输入您的密码" }],
  code: [{ required: true, message: "请输入验证码" }],
};

const codeUrl = ref("");
const loading = ref(false);
const showPsw = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

const handleLogin = () => {
  loginRef.value.validate().then((valid) => {
    if (valid === true) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), {
          expires: 30,
        });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore
        .login(loginForm.value)
        .then(() => {
          router.push({ path: redirect.value || "/" });
        })
        .catch(() => {
          loading.value = false;
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode();
          }
        });
    }
  });
};

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value =
      res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password:
      password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
  };
}

getCode();
getCookie();
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .t-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.t-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
